- Poorly controlled hypertension [defined as systolic blood pressure (SBP) of greater than or equal to 140 mmHg or diastolic blood pressure (DBP) of less than or equal to 90mmHg]. Note: Initiation or adjustment of antihypertensive medication(s) is permitted prior to study entry. BP must be re-assessed on two occasions that are separated by a minimum of 1 hour; on each of these occasions, the mean (of 3 readings) SBP / DBP values from each BP assessment must be less than or equal to 140/90 mmHg in order for a subject to be eligible for the study.